‘ March 4, 1930.
w. H. MATHERS‘
1,749,080
HYDRAULIC FILTER PRESS
Filed March 25, 1927
2 Sheets-Sheet
l
INVENTOR =
M5;
. By Attorneys,
March 4, 1930.
w. H. MATHERS '
‘
1,749,080
mnmumc FILTER PRESS
Filed March 25, 1927
2 Sheets-Sheet
INVENTOR
2
:
MM M4,
By Aitomeys
WW”?
1,749,080
Patented: Mar. ,4, [i930
I
PATENT ~ OFFICE
Y
WILLIAM ‘H. MArHEns, for nonnis, NEW YORK, ASSIGNOR 'ro RICHARD DUDGEON,
mo, OF NEW YORK, N. Y., A CORPORATION or new YORK
I HYDRAULIC FILTER rnnss
Application mumps, 1927. Serial No. 178,373. ~
> 1: This invention relatesto improvements in ' Presses constructed in accordance with the
?lter presses, adapted for use in: the ?ltering V present‘invention differ from those of the
of clay andfor‘analogous purposes.
prior art in that a hydraulic jack 26, pro
j Heretofore the power unit or compressing vided ‘with a suitable pumping device 27, is
element of a ?lter press of the above-described used as the compressing element, instead of
character has comprised a. screw jack mount thecscrew and gearing.
ed in one endof the supportingframe’of the
In‘Fig. -2 is illustrated a simple and prac
press, 'said jack being driven by suitable‘gear tical means of applying a hydraulic jack to
ing.__
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one of the presses of the prior art without
.19 - It‘ is va purpose of the present
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invention to modi?cation other than the removal of the
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I‘ vmaterially increase the speed ofoperation of screw and gearing. VVhen- applied in this
" xthe press and at the same time reduce the mannerpthe jack may comprise av ram 28
mounted in a cylinder 29 having its base 30
placed against the inner surface of the sup
port 23 over the threaded opening 31’ origi
nism and providing the same with. suitable nally provided to receive the removed ‘screw.
' ' manual labor involved.
This has been ef
JfeCted by'rdevising‘a simple means ofvsub'sti
:tuting a‘ hydraulic jack for the screw mecha
‘ ‘ operating mechanism .wherebythe ram may,
65
A simple and'practical, but ingenious, means.
' r if desired, be rapidly advanced by mechanical whereby the jack may be secured to 'theend
means prior to the ‘application of hydraulic support, as'disclosed in Fig. 2, may comprise
.29 pressure and permanentlymaintainedin ad a retaining plate or disk 32 placed'against
70
vanced position,-an'd whereby the ram may the outer surface of the end support'23 over
, *be'returned' eitherlby manual operation or the opposite end of the threaded opening
. 31,.and the jack ‘and plate maybe ?rmly
' rIn the accompanying ‘drawing illustrating ‘clamped vtogether by means of appropriate‘
fastening devices such, for example, as studs
Figural iis'a perspective view of a ?lter 33 each having one end inthreaded engage;
press adapted. for the ‘?ltering of clay, in ment with the base of the cylinder 29 and
which the invention is embodied.‘
having its other end passed through an open
' " Fig. 2is1a top: view of one endof the press, ing in the plate32 and secured by means of
parts of "which are .shown in ‘cross-section. , a nut 34.
IFig. 3‘is alconventional‘representation of Withinthe space between the end ofthe
the pumping'element' of'the press, parts there-. ramy28 and the platen 25 may be inserted a
of'being shown‘in‘cro‘ss-section.
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?ller block 35,. which may be suspended from
,automaticallyr
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t'he finvention,-<-
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A
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75
.
a Fig. 4 is a view of'an end portion ota the upper portion of ‘the platen
means of a
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press, illustrating‘ a modi?ed form of them hanger 36'secured to the‘ platen by any suit
vention.
'
'
"
‘
’
' able fastening devices 37 . ' The platen may be
In‘Fig, is disclosed a ?lter of a wen; provided withjend rollers 38 in the usual man
known, type-‘comprising ?lter elements,‘ 20 ner, whereby it may be supported upon and
.40 suspended overa‘tro'ugh21 by “means of move along the bars or rails, 22. ‘
' ,
i spaced rails or bars 22v having end supports‘
23 and intermediate sup orts'24.
. V'In ?lter presses of the ‘a eve-described char
‘ _ acter, the ?lter units have heretofore been
90
" Liquid may be forced into the base of the
cylinder behind. the ram by any appropriate
means such,,for example, as a pumping de
vice represented in conventional form in Fig. .
provided‘with compression mechanism ‘com; 3. Such 'a pumping device may comprise
prising a screw (not shown), mounted in one a liquid container39 including a chamber or
95
' ‘of the end supports 23, having suitable gear- , reservoir 40 from‘ which liquid may be
A ' A ‘ing (not shown) __Whereby it may be caused to
~' .7 forcibly advance the platen 25 and subject the ,
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v5O
. 1;
?lter-unitsto the desired degree of compres
..
slon.
pumped by the ‘plunger 41 when reciprocated
by means of the lever 42 through the pipe 43
to the base of the cylinder 29 of the jack 26.
The flow of liquid may be controlled by suit»
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1,749,080
pumping element and then reciprocating the
able means represented conventionally as
comprising an inlet valve 44 and an outlet“ lever 42, thereby forcing liquid under high 7
valve 45. These valves, when effective, per pressure from the reservoir 40- into the base
mit liquid to be drawn from the reservoir 40 of the cylinder 29 (Fig. 2)v until the ram has
into the pump chamber 46 during the upward been advanced su?iciently to produce the de 70
stroke of the lever 42, and "from the‘ pump’ sired ‘degree of compression. i The retaining
chamber‘ 46 into the piping 43 duringjthe nut 53' may then be rotated" and thereby moved
down stroke of the lever. These. valves, along the threaded endof the ram until its '
when eii'ective, prevent
10
rear surface is brought in contact with the v ‘
return ?ow of the
exposed end'surface. of the'cylinder 29,-:‘thu's:
?uid either from the pipe 43 to ithep'um'p
chamber 46 or from the chamber 46 to'the ,nmintaimng the rain in’ its advanced position 7 ‘
reservoir
40.
e
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without maintaining the hydraulic pressure
'
To provide for the return of ?uid ‘from
in the cylinder.
‘
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the cylinder of'the jack-ltoithe reservoir 40 I. _ When it is desired toirelease the‘ ?lter units
when the ram is returned/toward the base from the pressure of the jack,pthe ram may
of the cylinder, the pump may include a by
pass. 47,: thereby‘a?ording a. free passage
around the valve' This by-pass may be con-I
trolled by‘ any appropriate means such‘?’for
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be slightly 7' advanced byimparting?one’ or
more strokes to ‘the pumping mechanism,
thereby freeing the retaining nut, which may
then be advanced: along the threaded‘ end of
' example, as the needle valve 48. If desired, the ram, after» whichlthe ram may. be returned as
a pressure gage 49 may be connected with the to its normal positionbyTthe' rackiand'pinion '
pumping device at. anv suitable point between after ?rstopening the valvev48 controlling,
the by-passlin thepumping element? = '
the valve'45 and the jack.
"The conduit from the pumping devicemay ' After the, ram has been withdrawn, the?
be connected byasuitable couplings 50, 51 with ?ller-‘block 35 may {be "swung about'thie?at so
a nipple @ 52, whi-ch'may bepassed‘ through tachin'g element‘37 to a position out'of-line
an'openingin the retaining plate 32' and have with ‘the jack, thereby permitting. the platen .
threaded‘ engagement'with the base 30 of the 25 to 'be’ moved forwardlyso as .tov provide
cylinder‘29."
30
'-
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r
working spacerneededv in the removal’ or the ‘
,
fMe’ans may, if. desired, be provided where contents of. the ?lter and in: preparing the asv
by the ram may be positively maintained in ?lter elements ~for av'subse'quent; charge of.
any "position to which it maybe advanced by
hydraulic pressure without maintaining such In- Fig. 4 i's'l'illustrated' a modified form? .7
pressure-for such purpose; As herein dis of the invention adapted "for use when the’
c1osed,"this“- retaining means comprises a reg jack isto be applied to‘ anew installation; 100
talnin'g‘nut 53 having threaded engagement As herein .disclosedythelendssupport’23’ is
material. "
35
H
‘
,
,,
with-the exposed end of the ram. This nut provided with an opening 315’. of suiiicient?
may be provided with radial‘ spokes'54lwhere'-v
1 ,
diameter to receivethe base portion of the._;_ _ W ‘I
‘ by it may be rotated, or, if preferred, itin'ay cylinder29z’,'~landthe‘?angeBO’.is indicated‘
'
40 be provided with openings 55 in its periphery as being disposed at some considerable‘TdisT-v 10s
' in‘ which the end of an operating "tool may tance from the'basel'ofthe cylinder-in order’
be
inserted.
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that the flange mayrestagainst'theinnersura ‘
Means may also be‘ provided whereby the 'face of the end support 23"‘whenT the end‘ of '
,g min may be rapidly advanced in the cylinder the ‘cylinder is substantiallyflush lwithFthe
orreturned when free.v 'As herein disclosed, outer surface of the support-23'1" This form .iiox
such operating means- is indicated as coin-v ofthe invention dispenses with the'neces's'ity
prising a pinion ‘56' rotatably mounted with of making use of: the retaining plate 32 and
in a gear case 57 forming a part ofthe cylin the studs and nuts 33',‘ 34 usediasia 'pa'rtof
der‘ '29,- said pinion having ‘meshed engage the form‘ of the invention ‘illustrated in Fig‘; 2.
ment with a rack 58 cut into the adj aCentsurJ The form of the invention; illustrated in Fig.
face portion of the ram. ‘The end'portion' '4vis also adapted for use when the hydraulic
59 (Fig. 1) or" the shaft to whichv the pinion jack is to be-‘substitutedforv a removed screw
should be ?xedlysecured may be provided : jack of the type inf-whichthewthreaded-ele
with a radial'opening to receive an operating ment of the" support which receives the screw
handle ‘whereby ‘the pinion may be rotated. is in thenature of a‘ nut or bushing, the re 126.
lVhen vitis desired to subject the ?lter ele moval; of which. provides the opening "31‘ to
ments ‘to’ compression, the ram, may be rapid receivethe basei-portioneof the cylinder :29’.
If desired, either "form of the invention
ly advanc'ed'by means ofthe rack and pinion
> _ 56, '58, until vits end is brought in contact with herein‘disclosed may be'provided' with means
the filler 35. To 'facilitatethis rapid advance wherebythe ram? at‘each forward movement 125
mentv ofthe ram, the valve 48icontrolling the may be automatically'returnedif free. v[As
by-pass'47 of the pumping element (Fig; 3), illustrated in ‘Fig.’ 4“, such-‘automatic restoré' :
should ?rst be opened; The ?lter elements ing means 'may‘ comprise a cross-barf6‘0yse1I
may then be subjected to the,‘ required degree cured
of the in-any
ram and
appropriatemanner
connected by meanstooftheen'd
a- ?eii'é.
of compression by closing the valve 480i the
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1,749,080
ible'cable 61‘passing over pulleys 62 to'a ing its base mounted against the inner surface
. weightv 63. The pulleys may be mounted in of said support over the threaded opening
suitable brackets "64:, which may ' be secured originally provided to receive the screw, a
to any appropriate part of thegjack by screws vretaining plate mounted against the outer
surface of said support over the opposite end
. In the form of the invention illustrated in of said threaded opening, and fastening ele
Fig. 4, the jack may be secured to the end ments passing through said opening and con
. 65 or'other suitable‘ fastening devices.
,
' support by bolts 33’ passing" through the necting the base of said hydraulic jack with
?ange 30’ and having threaded engagement said retaining plate.
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In witness whereof, I have hereunto signed
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with the end support.
~ The operation of ‘the formpof the device
illustrated in Fig. 4 is identical with that
of the form illustrated in Fig. 3.
‘
my name.
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*1 01
V
WILLIAM H. MATHERS.
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It will be apparent that the rack and pinion '
' of either form ofthe invention herein dis
closed may be omitted, if desired, in which
89
case the ram may be advanced solely by hy- I, v
draulic means and may be restored by the
Weight and cable attachment.
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. ‘The rack and pinion may be used without
the weight, in which case the ram may be
(0 Cu
advanced, by the rack and pinion to the point
at which high pressure is needed, and may
be restored to normal position‘ by the rack and
g 25 pinion after the pressure hasbeen released.
90
I If the weight and cable attachment is used _
[in association withthe rack and pinion, the
latter may be relied upon to. advance the, ram '
I up to the point at which hydraulic pressure
.30 is toibe applied, and the restoration of the
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‘ram may be automatically e?ected' by! the
weight and cable attachment when the pres
sure has'be'en released.
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. ' ' .It willfbe apparent that the speed'of opera
,'
tion of presses adapted for usein the ?lter
.ing of clay, and for like purposes, may be
35;,
it
V .materially enhanced when modi?ed in ac
‘cordance ' with‘ the invention herein , de
scribed,‘as compared with presses of the prior
art dependent upon a simple screw and gear
ing as the pressure-elfecting element. As
clearly indicated in Fig. 3, this conversion
. of a, ?lter press of the prior art into one em- ‘
‘ bodying the present invention may be readily
45, effected Without resort to skilled labor and
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; without making any alterations‘ in the old,
type of press other than to remove the screw ‘
Qan'd gearing and‘fasten the hydraulic press .
in its place. Onthe other hand, if the by
50
draulic press is applied to a new installation,
a material portion of the jack may be housed‘
1 ,‘within the end support, thereby making it
D5
‘ possible to either shorten the press to that '
extent or increase the capacity of the press by _ i
inserting additional ?lter ‘units.
1 The invention is not intended to be limited
to the speci?c forms thereof herein disclosed
for purposes of illustration, but should be
: > I regarded as covering modi?cations and varia
tions thereof within the scope of the append- .
ed claim.
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What I claim is:
A ?lter press, having’a hydraulic ‘jack,
65 mounted in its end support in place of a re—
moved screw jack, said hydraulic jack hav
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